Unround motor run at the AHK (S6 plus)

What are the causes of an engine running unevenly? Somehow my fat guy is running round again and I'm getting really into the mind

-> He has full power and runs very cleanly

-> The round run gets stronger, the warmer the engine is - trotdzem also noticeable in the cold engine

-> It feels like something's tying up to the engine, it's swallowing up a bit and then it's going on - but that's in one run. He's not stuttering or anything.


-> If the engine is so restless, you don't see a touch of the rev indicator

-> I still have the problem that it is often sawing at the traffic light in hot/hot conditions after the clutch operation (between 200 and 1200 tours - approx. 3-4 times, then immediately rest again - with humidity even more often to observe).

-> He sometimes starts badly - I don't have to orgerln for long, but he starts slowly and starts all cylinders one after the other - sounds horrible

I'm about to end up with my Latin, what it could be...Compression is almost the same on all cylinders and it has almost new values. Performance is also sufficient.

Lambda probes are new, spark plugs look good and are only 20,000 km old (problem was already there), temperature sensor was changed a year ago, timing belt changes are imminent, but one or more rolls at the belt drive already chirping well (can the round run be due to a defective damper or worn out belt?).

Would be super happy if someone could help me... many thanks in advance!